devel/glib2 build failure on ARM?

["John D. Baker" <jdbaker%consolidated.net@localhost>]

Seen here:

  http://mail-index.netbsd.org/pkgsrc-bulk/2020/04/14/msg018739.html

and also on my BeagleBoneGreen (evbarm-earmv7hf):

[...]
[423/1039] Linking target tests/refcount/properties.
FAILED: tests/refcount/properties 
gcc  -o tests/refcount/properties 'tests/refcount/037f711@@properties@exe/properties.c.o' -I/usr/include -I/usr/pkg/include -I/usr/pkg/include/python3.7 -L/usr/lib -L/usr/pkg/lib -Wl,--as-needed -Wl,--no-undefined -O2 -D_FORTIFY_SOURCE=2 -Wl,-R/usr/lib -Wl,-R/usr/pkg/lib -Wl,--start-group glib/libglib-2.0.so.0.6400.1 gobject/libgobject-2.0.so.0.6400.1 -lm -pthread -lintl -Wl,--end-group '-Wl,-rpath,$ORIGIN/../../glib:$ORIGIN/../../gobject' -Wl,-rpath-link,/var/tmp/pkgsrc/devel/glib2/work/glib-2.64.1/output/glib -Wl,-rpath-link,/var/tmp/pkgsrc/devel/glib2/work/glib-2.64.1/output/gobject
ld: /usr/pkg/lib/libffi.so.7: undefined reference to `__aeabi_unwind_cpp_pr0'
[...]

Different failure point but same failure.  As 'ld' complains about "libffi",
perhaps that package is mis-built somehow?

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